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Very likely Lenovo used Low temperature solder
https://news.lenovo.com/pressroom/pr...uring-process/
https://semiengineering.com/verifyin...t-performance/
https://www.youtube.com/watch?v=rkmON6h5B0IComment
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Looks like this is it... now sure how long this will last before I'll have to do proper reballing... At least I know what is wrong with it now.
Thanks once again!
Here is short video of my reflow, must watch till the end!
https://youtu.be/5vfeV0ad2wIComment
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Hi all. I need to replace an SMD fuse on my camcorder and this is the first time I have had to do any SMD soldering so your advice would be appreciated. Below is a picture of the board that I am working on and I have highlighted the fuse that needs to be replaced. I managed to zoom in to take this picture but the fuse is really tiny and is sandwiched between other components so this is going to be a new milestone for me. I appreciate that I am going to have to buy a new soldering iron if you could advice on what I need please. I was thinking about putting a big soldering iron across the whole... -
Hi everyone,
I have an HP Elitebook 840 G5 that I am trying to get working again. I've removed the front bios chip (the 32mb one) and have run it through HP unlocker already. I've uploaded and verified the new bin, but am now experiencing an issue that has led me to believe I've been soldering the chip back to the motherboard incorrectly.
Essentially, after re-soldering the chip back into its place and reassembling the laptop, the charging light immediately flashes orange and white and then shifts to a solid white. The capslock and numlock lights blink seven times... -
Hi Everyone,
I bought a Yihua 992DA+ hot air gun and soldering iron unit from a used market.
1. Soldering iron works great
2. There is a burnt mark on the hot air gun handle.
I am a bit concern by the look of the melted plastic. I opened the hot air gun handle and took some readings with a multimeter.
Heating element ~ 75ohm. (Similar reading taken from a spare heating element that came with the unit.)
Thermocouple ~ 1.5ohm. (Similar reading from the spare heating element.)
Reed switch tested ok with a magnet.
From the above test, I can conclude... -
hello.
A few months ago,I have purchased 0.1mm Soldering Iron Tip of below aliexpress link,But I noticed that It is totally impossible to use this 0.1mm iron tip in the T12 soldering station
https://ko.aliexpress.com/item/4001275635593.html
Is there any good soldering station which is possible to use 900M-TJ-I tip and have inexpensive or reasonable price in aliexpress?
Any reply would be appreciated. -
Hi,
We continue to struggle with the SEF 551.10 reflow oven. After we managed to start it in october - the topic here -> https://www.badcaps.net/forum/troubl...he-reflow-oven everything promised to be good. But...
While soldering with lead paste somehow goes, but we cannot force the stove to raise the temperature
that he would dissolve the unleaded binder. I even doubted what this bastard shows on screen and passed through it a thermocouple...03-16-2025, 09:26 AM
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